DTC Parameters

WARNING: This page is about a different car, the 2002 Saturn Vue. However, it is still accessible from the selected car via links, so may be relevant.

Engine speed is 1600-2400 RPM.
Volumetric efficiency is 25-60 percent.
Bank 1 is in closed loop.
Long term fuel trim is active.
System is not purging; or has been purging for at least 10 seconds.
Calculated exhaust gas temperature is greater than 662°F (350°C).
EVAP diagnostics are not running.
HO2S heater performance diagnostics have been run.
No CAM, ECT, EVAP purge solenoid, fuel trim, HO2S bank 1 sensor 1 heater, MAF or misfire DTCs have been set.

DTC sets if the average response time for the sum of the HO2S bank 1 sensor 1 lean-to-rich and rich-to-lean switches is greater than 1.3 seconds for 21 samples (about 28 seconds).